Yu Fan is an assassin who was raised by Gauron and is part of the "eldest" group along with the Xia siblings. She has proficiency in piloting Arm Slave machines, specifically using a Zy-98 Shadow Arm Slave before switching to a stolen Chodarl in central Hong Kong. In addition to her skills as an Arm Slave pilot, Yu Fan is also adept at using small arms and excels in unarmed combat. She wears a trench coat with green linings. During the last episode, Yu Fan disclosed that there was tension between the Xia siblings and Amalgam due to their role in wiping out the town of the latter during the Second Chinese Civil War. At sixteen years old, she is one of the youngest members of her group.